Timer-brush



F. A. GODLEY.

TIMER BRUSH.

APPLICATIQN FILED AUG. 26, 1919. I '1 ,333 ,71 l PatentedMar. 16, 1920.

FRANK A. GODLEY, F PHILADELIPHIA, PENNSYLVANIA.

TIMER-BRUSH.

Specification of Letters Patent. Patented luau; 16, 1920,

Application filed August 26, 1919. Serial No. 319,979.

To all whom it may concern:

*Be it known that I, FRANK A. GooLEY, a citizen of the United States,residing at the city of Philadelphia,'county of Philadelphia,

and State of Pennsylvania, have invented certain new and usefulImprovements in Timer-Brushes, of which the following is aspecification.

This invention has relation to a timer brush of the general type shownand described in U. S. Letters Patent #1,296,420, and has for itsleading object to so improve the construction of such type of brush thatthe commercial value thereof is materially enhanced. Other and' furtherobjects reside in the provision of general details of construction andin the provision of certain combination of parts as will hereinaftermore fully appear.

The invention consists of the improvements hereinafter described andfinally claimed. Y

The nature, characteristic features and scope of the invention will bemore fully understood from the following description taken in connectionWith the accompanying drawings forming part hereof, and in which:

" Figure 1, is a View in elevation of a timer brush embodying featuresof the invention,

and

Fig. 2, is a cross-sectional view thereof.

For the purpose of illustrating my invention, I' have shown in theaccompanying drawings one form thereof which is at present preferred byme, since the same has been found in practice to give satisfactory andreliable results, although my invention is not limited to the precisearrangement and organization of the'instrumentalities as here 40 inshown and described.

Considerable difiiculty has been experienced in the trade Withtin1er-brushes of the general type under consideration, for the reasonthat the tempered spring-steel arms carrying the contact-brushes arecontinuously breaking. I have discovered that by fluting or corrugatingthe arms, laterally, this difliculty is obviated. WVhile such fluted orcorrugated arm may be attached to any one of several forms of sleevesnow upon the market, I prefer to employ a sleeve as illustrated in thedrawings a description of which will now be given. The sleeve comprisesa I non-continuous member 10 formed from a Sistrip of metal bent toshape. One end of such strip of metal is bent barlkwardly as at 10. Theopposite end has stamped therefrom a lip 11 bent outwardly upon an arcof a circle and reinforced by means of a fluted or ribbed effect 12. Theextremity of this particular part of said sleeve is outwardly bent as at13 Which With the slotted portion 1st forms a keeper for the spring armabout to be described. The arm is dcsig nated 15 and is formed upon anarc of a circle. One end of the arm is rigidly fixed to the part 10 ofthe sleeve, as by a screw and nut connection 16, and the free endthereof carries a brush 1? for contacting with the segments of a timerbrush as is Well understood in the art. The arm passes under the part 13of 'the sleeve, through slot l-l and is adapted to abut against the lip11 which serves as a spring support for said arm. The arm itself isfluted or corrugated laterally as at 18. Such structure serves to addstrength and flexibility to the arm and at the same time permits of acertain amount of flexibility, which together with the yielding natureof lip-'11 upon which the arm rests, contributes to the longevity of armand reduces the possibility of breakage to a minimum.

It will now be apparent that I have devised a novel and usefulconstruction which embodies the features of advantage enumerated asdesirable in the statement of the invention and the above descriptionand While I have in the present instance shown and clescribed thepreferred embodiment thereof '90 which has been found in practice togive satisfactory and reliable results, it is to be understood that thesame is susceptible of modification in various particulars Withoutdeparting from the spirit or scope of the invention or sacrificing anyof its advantages.

Vhat I claim is 1. A timer brush comprising a sleeve and a spring armcarrying a contact brush eX- tended from said sleeve, said arm beingfluted or corrugated.

2. A timer brush comprising a sleeve and a spring arm carrying a contactbrush extended from said sleeve said armbeing fluted or corrugatedlaterally.

A timer brush comprising a non-continuous sleeve formed from a strip ofmetal bent to shape one end thereof having a rear- Wardly extendedflange and the opposite end having a lip and a flange extended outwardly1'10 therefrom there being a slotted portion between saidflzbnge and lipand a fluted 01' corrugated spring arm carrying a Contact brush fixed t0the first mentioned "flange and extended beneath the last mentioned,flange and through said slot in abuttingrelzttion with said lip.

42. A timer brush comprising a noncontinuons sleeve formed from a stripof meta bent to shape ene end thei-eet having a x'earwanfiiy extendedflange and the opposite end having a fluted or corrugated lip and aflange extended outwardiyntherefrom there being a slotted portionbetween Said flange and lip and a fluted or corrugated spring armcarrying a contact brush fixed to the first mentioned flange andextended beneath the Last mentioned flange and through said slot inabutting relation with said ii In testimony whereof, I have hereuntosigned my name.

FRANK A.. GODLEY.

